Green buildings are Eco-friendly, resource efficient and are very energy efficient. They are more comfortable and easier to live with due to low operating and owning costs. This presentation consists of brief introduction about green buildings, their design and benefits. Best Regards: Engr. Muhammad Ali Rehman

1. Green Buildings

2. INTRODUCTION
Green buildings are eco-friendly, resource efficient and are
very energy efficient. They are more comfortable and easier
to live with due to low operating and owning costs.
GREEN BUILDINGS IN DUBAI

3. WHAT ARE GREEN BUILDINGS?
Those buildings which are constructed under the consideration of
Sustainable construction development

4. EXAMPLES OF GREEN BUILDINGS

6. HISTORY
 In 1993, Rick Fedrizzi, David Gottfried and Mike Italian established the
U.S. GREEN BUILDING COUNCIL

7. HISTORY cont.…
 U.S. GREEN BUILDING COUNCIL
Their mission: to promote sustainability in the building and construction
industry.

8. HISTORY cont.…
 U.S. GREEN BUILDING COUNCIL
LEED
L – Leadership in
E – Energy &
E – Environmental
D – Design
LEED is green building certification system working g in United States and as
well as all over the world
 USGBC created Rating System which is nationally accepted as a standard
for the design, construction, and operation of high performance green
buildings

9. WHY SO MUCH INTEREST IN GREEN
CONSTRUCTION?
 Sustainable development has become a global issue
 Global climate change has become an increasingly serious concern for
the future
 Concern over the impacts of
 Built environment on Natural environment
 Economy
 Health
&
 Productivity

10. MERITS
 Lower operating costs (by 30%- 40%)
 Improve occupant health
 Reduce pollution
 Reduce water usage (by 20%- 30%)
 Eliminates creation of waste
 Reduce power consumption (by 40%- 50%)

11. ELEMENTS OF GREEN BUILDING
1. SUSTAINABLE SITTING AND DESIGN
2. WATER QUALITY AND CONSERVATION
3. ENERGY EFFICIENCY
4. RESOURCE EFFICIENT MATERIALS
5. HEALTHY INDOOR ENVIRONMENTAL QUALITY

12. 1) SUSTAINABLE SITTING AND DESIGN
Appropriate Building Site
Preserve Open Space
Reduce Urban Sprawl
Develop Brownfields
Use Of Demolished Material in landfill
Design to Optimize use of Sun Wind and Air

13. SUSTAINABLE SITTING AND DESIGN cont.…
APPROPRIATE BUILDING SITE
 From many aspects it can be examined with respect to how “green”,
i.e for People and Environment, the home on site can potentially be.
 Building site close to work, schools, shopping so as to minimize the
use of vehicles

14. PRESERVE OPEN SPACE
 Open space is any open piece of land that is undeveloped and is
accessible to the public.
 Public Parks, community gardens.
 Open space provides recreational areas for residents and helps to
enhance the beauty and environmental quality.
SUSTAINABLE SITTING AND DESIGN cont.…

15. REDUCE URBAN SPRAWL
 Urban sprawl is refers to the migration of a population from
populated towns and cities to low density residential development.
 Urban sprawl is cutting into precious farm and wild lands, leaving us
with less green space and precious wild lands
 The most obvious problem is that sprawl leads to a car-dependent
culture
SUSTAINABLE SITTING AND DESIGN cont.…

16. DEVELOP BROWN FIELDS
 Brown fields are properties that are vacant or underused which may
be contaminated due to hazardous waste or pollution.
 But have the potential to redeveloped by cleaning up the site.
 Brown fields can provide many benefits to a community, human health
and Environment
SUSTAINABLE SITTING AND DESIGN cont.…

17. SUSTAINABLE SITTING AND DESIGN cont.…

18. USE OF DEMOLISHED MATERIAL IN LANDFILL
 Building construction and demolition in Pakistan approximately 106
Million tons annually
 4 tones of waste are typically deposited into a landfill during the
construction of a new 2000 Square Foot home
 Demolished material in construction tend toward the Green Building.
SUSTAINABLE SITTING AND DESIGN cont.…

19. SUSTAINABLE SITTING AND DESIGN cont.…

20. DESIGN TO OPTIMIZE USE OF SUN WIND AND AIR
 By taking advantages of natural systems to ventilate, daylight and
heat or cool buildings eliminate the requirements for fossil fuel based
energy consumption.
 Optimizing use of sun wind and air, improve Environmental
Performance and reduce energy demand significantly.
SUSTAINABLE SITTING AND DESIGN cont.…

23. 2) WATER QUALITY AND CONSERVATION
 Use water efficiently through high efficiency fixtures, elimination of leaks, water
conserving cooling towers, and other actions

24.  Improve water quality. For example, storm water settling ponds,
kitchen grease-traps, eliminate garbage disposals.
WATER QUALITY AND CONSERVATION cont..

25.  Recover non-sewage and graywater for on-site use (such as toilet flushing and
landscape irrigation, and more generally, consider the water quality
requirements of each water use)
 Establish waste treatment and recycling centers
WATER QUALITY AND CONSERVATION cont..

26.  Eliminate the use of lead materials.
 Use non-toxic bathroom and kitchen cleaning products, including
products with the Safer Choice label.
 Install separate pipe system for graywater
 Install separate pipe system for graywater
WATER QUALITY AND CONSERVATION cont..

27.  Optimize passive solar orientation, building massing and use of external
shading devices.
 Minimize the outer surface of the building direct towards sun it help in
summer season to minimize the heat conduction and radiation.
3) ENERGY EFFICIENCY

28.  Optimize building orientation, massing, shape,
design, and interior colors and Consider the use
of light shelf technology.
 Use high performance low-e glazing, which can
result in significant year round energy savings.
 Window frames, sashes and curtain wall systems
should also be designed for optimum energy
performance including the use of multiple
thermal breaks to help reduce energy use.
 Optimize the value of exterior insulation and the
overall thermal performance of the exterior
envelope assembly. .
 Incorporate sensors and controls and design
circuits
 Use variable speed drives on fan and pump
motors.
ENERGY EFFICIENCY cont..

29.  Use state-of-the art, high efficiency, heating, ventilation and air conditioning
(HVAC) and plumbing equipment, chillers, boilers, and water heaters, etc.
 Use heat recovery ventilators and geothermal heat pump technology for up to
40% energy savings.
ENERGY EFFICIENCY cont..

30. 3)RESOURCE EFFICIENT MATERIALS cont..
 Identify ways to reduce the amount of materials used and reduce the
amount of waste generated through the implementation of a
construction waste reduction plan.
 Identify ways to use high-recycled content materials in the building
structure and finishes.
 Optimize the use of engineered materials which make use of proven
engineering

31.  Explore the use of bio-based materials and finishes such as various
types of agriboard Some structural insulated panels are now made
from bio-based materials.
 Evaluate all products and systems used for their ability to be recycled
when they reach the end of their useful life.
RESOURCE EFFICIENT MATERIALS cont..

33. 5)HEALTHY INDOOR ENVIRONMENTAL
QUALITY
 Use building materials, adhesives, sealants, finishes and furnishings
which do not contain, harbor, generate or release any particulate or
gaseous contaminants including volatile organic compounds.
 Provide dedicated engineered ventilation systems that operate
independently of the buildings heating and cooling system.

34. HEALTHY INDOOR ENVIRONMENTAL
QUALITY cont.…
 Design building envelope and environmental systems by keeping in
view the air temperature and provide adequate ventilation,

35.  Prevent contamination of the building during construction. Take steps to
minimize the creation and spreading of construction dust and dirt.
 Protect construction materials from the elements so that they do not
become damp, moldy or mildewed.
 Provide a clean and healthy building. Use biodegradable and
environmentally friendly cleaning agents that do not release VOCs or other
harmful agents and residue.
HEALTHY INDOOR ENVIRONMENTAL
QUALITY cont.…

36.  Prior to occupancy install new air filters and clean any contaminated
ductwork and ventilation equipment.
HEALTHY INDOOR ENVIRONMENTAL
QUALITY cont.…

37. BENEFITS OF GREEN BUILDINGS
 ENVIRONMENTAL BENEFITS
o Protect ecosystems & biodiversity
o Improve air and water quality
o Reduce solid waste
o Conserve natural resources
o Reduce harmful emissions, etc..

38.  ECONOMIC BENEFITS
o Energy and water savings
o Increased property values
o Improved employee productivity and job satisfaction
o Reduced operating cost, etc..
BENEFITS OF GREEN BUILDINGS cont..

39.  SOCIAL BENEFITS
o Improve Lifestyles and Recreation (Quality of Life)
o Enhance occupant comfort and health
o Minimize strain on local infrastructure
o Improve air, thermal, and acoustic environments
o Improve local schools (ex: test scores and high attendance rate)
BENEFITS OF GREEN BUILDINGS cont..

40. HOW GREEN BUILDINGS ARE DIFFERENT
FROM OTHERS
 Use of minimum amount of non-renewable energy, produce minimal
pollution, increases the comfort, health and safety of the people who
live/work in them.
 Minimize the waste in construction by recovering materials and re-
using or re-cycling them.

41. COST OF GREEN BUILDINGS
 Green buildings are commonly perceived to be a lot more expensive
than conventional buildings.
 Cost of the construction may be 5-20% more than conventional buildings.
 The average premium is approximately 2% (200-450 PKR/ft2)
 The majority of this cost is due to the increased architectural and
engineering (A&E) design time, modeling costs and time necessary to
integrate sustainable building practices into projects.

42.  Green buildings cost less to light, heat and cool, which means the lower
operating cost for the owner.
 Energy costs of green buildings go down by 30-40% as in 30-35 years of cycle.
 Studies have shown that over a 20 years life period, some green buildings
have yielded 5300-7100 PKR/ft2 back on investment.
 Use of renewable, recyclable and sustainable waste material for
construction, reduces cost.
 Overall 10% cost saving potential over 10 years.
ACTUAL FACTS ABOUT GREEN BUILDINGS

43. 45%
27%
53%
39%
Energy Consumption
Occupant Satifaction
Lower Maintenace Cost
Less Water Use
Facts & Figures by GSA (General Services Administration)

44. 34%
28%
13%
25%
38%
Operating Cost Reduction Higher Building Values Increased Occupancy Ratio Return On Investment
Facts & Figures from McGraw-Hill Construction Smart-Market Report

45. 9.90%
13.60%
10.90%
25%
19%
Improved ROI
Decreased Operating Cost
Increased Buildig Value
Reduced Energy Cost
Reduction in Operating Cost
*McGraw Hill Construction (2012). World Green Buildings Study. Accessed Nov. 29, 2012 via
http://analyticsstore.construction.com/index.php/2012-world-green-building-trends-key-facts.html
*Lux Research, "Driven by Higher Rents and Values, Green Buildings Market Grows to $260 Billion,"
2014. http://www.luxresearchinc.com/news-and-events/press-releases/read/driven...
*Heather Clancy, "In California, At Least, The Case For Energy Efficiency Is Building," Forbes, Dec. 30 2014.
Perceived Business Benefits

46. GREEN BUILDINGS CAN REDUCE
Energy
Use
24%-50%
CO2
Emission
33%-39%
Water
Use
40%
Solid
Waste
70%
*Turner, C. & Frankel, M. (2008), Energy performance of LEED for New Construction Buildings, Final Report
*GSA Public Building Services (2008), Assessing for Green Performance: A post Occupancy Evaluation of 12 GSA
buildings

47. BARRIERS TO GREEN BUILDINGS
Lack of Planning & Developer Education
Lack of Knowledge about Local Vendors & Resources
Lack of Technical Expertise & Technology
Difficult Local Land Use
Selfishness